JPH0470471B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention is a solution for a vehicle door or trunk, etc.
The present invention relates to a vehicle unlocking device that remotely controls locking. (Prior art and its problems) Devices that automatically unlock and lock vehicle doors generally include a lock lever connected to a lock knob or cylinder lock, and an actuator that locks or unlocks the lock lever by swinging it. It is equipped with
By unlocking or locking the door lock on the driver's seat side, the door locks on the other doors are linked. By the way, in recent years, an infrared transmitter emits a specific key code signal, and an infrared receiver built into the door receives the coded signal.
A remote control unlocking/unlocking device has been proposed that unlocks or locks a door lock when a received code signal matches a set code signal. An example of such a device is JP-A-54-131500 (Automobile lock control device). However, the above-mentioned control device for automobile locks only unlocks and locks the doors, and cannot selectively unlock and lock each door or trunk on the driver's or passenger's side, making it impractical for practical use. There is a problem that causes inconvenience. (Object of the Invention) The present invention has been made in view of the above points, and an object of the present invention is to provide a vehicle unlocking device that can selectively unlock each door or trunk on the driver's seat or passenger seat side. do. (Summary of the Invention) In order to achieve the above object, the present invention provides a selection switch circuit capable of setting an operation code having information specifying a door or other opening/closing body to be unlocked or locked in a vehicle; a transmitter comprising a signal generating circuit that generates a key code signal and the operation code signal; a light emitting element that converts and outputs each code signal into a corresponding infrared signal; and a power source that supplies power to each of the circuits; A light-receiving element is provided on each door on the driver's seat side and the passenger's seat side of the vehicle and receives the infrared signal and converts it into a corresponding electric signal, and the converted key code signal matches the set memory code. and when they match, output an unlocking or locking signal to one or more doors or opening/closing bodies designated by the combination of the converted operation code signal and the received door. A vehicle unlocking device is constructed by a receiver equipped with a circuit. (Example) An example of the present invention will be described in detail below based on the accompanying drawings. FIG. 1 shows the external appearance of a portable ultra-compact transmitter that emits an infrared signal of a vehicle unlocking device according to the present invention, and an infrared light emitting element 2 that emits infrared light is disposed on one side of the transmitter 1. , two selection pushbutton switches A and B for designating doors and trunks to be unlocked, locked, and a monitor light-emitting element such as a light-emitting diode 3 as display means for monitoring the operating status of the transmitter 1 are arranged on the top surface. It is set up. The transmitter 1 is powered by a battery 5 as shown in FIG.
, a selection switch circuit 6 , and a signal generation circuit 7 , and the positive terminal of the battery 5 is connected to the key code signal generation circuit 70 , operation code signal generation circuit 71 and voltage detection circuit 72 of the signal generation circuit 7 via a line 9 . connected to each power input terminal of the One connection terminal of each of the pushbutton switches A and B of the selection switch circuit 6 is connected in parallel to the line 9, and the other connection terminal is grounded via resistors R ₁ and R ₂ respectively, and receives an operation code signal. It is connected to each input terminal of the generation circuit 71 and the key code signal generation circuit 70. Key code signal generation circuit 70, operation code signal generation circuit 71
Each output terminal is connected to each input terminal of an OR circuit 73, and the output terminal of the OR circuit 73 is connected to each input terminal of output circuits 74 and 75. Further, the output terminal of the key code signal generation circuit 70 is connected to the input terminal of the operation code signal generation circuit 71, and the output terminal of the voltage detection circuit 72 is connected to the input terminal of the output circuit 75. Each output terminal of the output circuits 74 and 75 is connected to an infrared light emitting element 2 and a monitor light emitting element 3, respectively.
connected to. As shown in FIG. 3, the transmission code signal consists of a start bit (1 bit), key code bits (16 bits), and operation code bits (2 bits). The key code signal generation circuit 70 generates a pulse train signal consisting of a start pulse signal Ps as shown in FIG. 4 and a specific key code pulse signal Pk specified for each vehicle.
Generates P ₁ . The key code pulse Pk consists of a combination of 16 bits “1” or “0”, and each bit is
Two pulses represent the value "1", and one pulse represents the value "0". For example, the key code is 11010
In the case of . . . , the key code pulse Pk is generated as shown in FIG. The operation code signal generation circuit 71 generates the operation code signal P ₂ after a certain period of time after the key code signal is input from the key code signal generation circuit 70 . This operation code signal _P2 is the push button switch circuit 6
When pushbutton switch A is pressed and closed (hereinafter referred to as on), the signal corresponds to the input from 01 as shown in Figure 5a, and when pushbutton switch B is turned on, the signal is 10. (Figure b),
When pushbutton switches A and B are turned on at the same time, a signal number 11 (c in the figure) is generated. Therefore, the OR circuit 73 outputs the start pulse signal Ps, key code pulse signal Pk, and operation code pulse signal.
A transmission code pulse signal _P3 consisting of _P2 is output. The transmission code pulse signal P ₃ is amplified by the output circuit 74 and then applied to the light emitting element 2 . The light emitting element 2 converts the input transmission code pulse signal _P3 into a corresponding infrared pulse signal and transmits it. The voltage detection circuit 72 detects the voltage of the battery 5 and outputs a signal to be applied to the output circuit 75 when the voltage falls below a certain voltage. The output circuit 75 operates when no signal is input from the voltage detection circuit 72 and supplies a lighting signal to the monitor light emitting element 3 based on the transmission code pulse signal P ₃ input from the OR circuit 73. When the signal is input from , the operation is stopped and the output of the lighting signal is stopped. The monitor light emitting element 3 lights up when the lighting signal is supplied, indicating that the transmission code pulse signal is being generated, that is, that the transmitter 1 is operating normally. As a result, the user can sense that automatic unlocking and locking of the door lock is possible when the light emitting element 3 is on, and that it is impossible when the light is off. FIG. 6 shows a block diagram of the receiver 10 mounted on the vehicle side. These light receiving elements 11 and 12 are respectively connected to respective input terminals of amplifier circuits 13 and 14, and each output terminal of these amplifier circuits 13 and 14 is connected to an input location determination circuit 15. and each input terminal of the OR circuit 16. The output terminal of the OR circuit 16 is the key code signal determination circuit 17 and the operation code signal determination circuit 19.
A memory (ROM) 18 in which a predetermined key code is stored is connected to the input terminal of the key code signal determination circuit 17. The output terminal of the key code signal determination circuit 17 is connected to the input terminal of the operation code signal determination circuit 19,
The output terminal of the operation code signal determination circuit 19 and each output terminal of the input location determination circuit 15 are connected to each input terminal of an output determination circuit 20. Power door lock sensors 21 and 22 that detect the state of the power door locks of the doors on the driver's seat and the passenger's seat, that is, whether they are unlocked or locked, are connected to each input terminal of the output judgment circuit 20. The output terminal is connected to the input terminal of the output circuit 23. The output circuit 23
The output terminal is connected to each actuator drive circuit (none of which is shown) of each locking/unlocking device for the driver's side door, passenger's side door, and trunk. The receiver 10 is configured in this way. The infrared light receiving element 11 or 12 receives the infrared code signal sent from the infrared light emitting element 2 of the transmitter 1, converts it into a corresponding electric signal and outputs it, and the signal is amplified by the amplifier circuit 13 or 14. The key code signal determining circuit 17 determines whether the input key code signal and the key code signal read from the memory 18 match or not, and when they match, outputs a matching signal and operation code signal determining circuit 1
Add to 9. After the coincidence signal is input from the key code signal determination circuit 17, the operation code signal determination circuit 19 determines the pulse of the operation code signal (FIG. 5) and adds the value (binary code) to the output determination circuit 20. . This value is set when the operation code signal pulse is not input, that is, when the pushbutton switches A and B of the transmitter 1 are both open (hereinafter referred to as OFF).
For example, the value is 00 when the switch is in the state, the value 01 when the pushbutton switch A is on (Figure 5a), and the value 10 when the pushbutton switch B is on (Figure 5b).
outputs a value of 11 when both pushbutton switches A and B are on (FIG. 5c). The input location determination circuit 15 includes two light receiving elements 11
For example, when the light receiving element 11 on the driver's seat side receives the code signal, a low level signal "0" is sent to the light receiving element 11 on the passenger seat side. When the light receiving element 12 on the side receives the code signal, it outputs a high level signal "1" and applies it to the output determination circuit 20. The door lock sensors 21 and 22 output, for example, a low level signal "0" when the door is unlocked, and a high level signal "1" when the door is locked. The output determination circuit 20 is the operation code signal determination circuit 1.
9. Based on each input signal from the input location determination circuit 15 and each door lock sensor 21, 22, determine which door and trunk are unlocked or locked based on a combination of these signals, and output the corresponding determination signal. do. This determination is performed, for example, as shown in FIG. That is, when the power door locks of the driver's side and passenger's side doors are both unlocked, the light receiving element 11 of the driver's side door receives the key code signal.
However, if pushbutton switch A of transmitter 1 is turned on (01), it is determined that the door lock should be locked (first stage in Fig. 7), and pushbutton switch B is also turned on. In case (10), it is determined that the door lock should be locked (second row in Figure 7), and in the same case (11), when pushbutton switches A and B are turned on at the same time, it is determined that the truck should be unlocked ( Figure 7, third row). Similarly, when the light receiving element 12 on the passenger seat side receives light, the determination is made in the same manner as described above (Fig. 7, 4 to 4).
6th row). The driver's side door lock is unlocked, the passenger side door lock is locked, and the light receiving element 11 receives light (Fig. 7, rows 7 to 9), or the light receiving element 12 receives light (Fig. 7, rows 7 to 12). When the door lock on the driver's seat side is locked and the door lock on the passenger seat side is unlocked, the light receiving element 11 receives light (the seventh step).
(13th to 15th rows in Figure 7), or when the light receiving element 12 receives light (16th to 18th rows in Figure 7), pushbutton switch A is on, pushbutton switch B is on, and pushbutton switches A and B are on. When both are turned on at the same time, the determination is made in the same manner as described above. Further, when the door locks of the driver's seat side and passenger's seat doors are both in the locked state (1), the light receiving element 11 on the driver's seat side receives light, and the push button switch A is turned on (see Fig. 7). (19th step), it is determined that only the driver's side door lock should be unlocked, and if pushbutton switch B is turned on (Fig. 7, 20th step), each of the driver's and passenger's side doors is unlocked. When both door locks are unlocked and pushbutton switches A and B are turned on at the same time (Figure 7, 21st row), it is determined that the trunk should be unlocked, and the light receiving element 12 on the passenger side also receives light. In addition, when pushbutton switch A is turned on (Figure 7, 22nd row) or pushbutton switch B is turned on (Figure 7, 23rd row), the driver's side and passenger's side It is determined that each door lock should be unlocked, and if pushbutton switches A and B are turned on at the same time (row 24 in FIG. 7), it is determined that the trunk should be unlocked. The output circuit 23 outputs a lock signal for each door, an unlock signal for locking the trunk, or a lock signal for locking each door in response to the judgment signal inputted from the output judgment circuit 20, thereby operating the corresponding actuators. Drive. Further, to summarize the basic operations shown in FIG. 7, the operation modes of each pushbutton switch A and B on the transmitter 1 side are shown in Table 1.

[Table] As is clear from Table 1, three operation modes can be obtained using the two pushbutton switches A and B of the transmitter 1. (Effects of the Invention) As described in detail above, according to the present invention, one or more designated doors (for example, both the driver's seat side and the passenger's seat side) are door) or other opening/closing body (e.g. trunk, etc.), so each door and other opening/closing body can be remotely unlocked or locked simultaneously or selectively as necessary. be able to. Therefore, all the doors and other opening/closing bodies can be unlocked or locked simultaneously or selectively on either the driver's seat side or the passenger's seat side outside the vehicle, which improves the efficiency of unlocking and locking operations. A driver and a passenger can easily and quickly board the vehicle.

[Brief explanation of the drawing]

Fig. 1 is an external view of a transmitter of a vehicle door unlocking device according to the present invention, Fig. 2 is a block diagram showing an embodiment of the electric circuit of the transmitter of Fig. 1, and Fig. 3 is a transmission code. 4 is a diagram showing an example of a key code signal, FIG. 5 is a diagram showing an example of an operation code signal, and FIG. 6 is a block diagram showing an example of the electric circuit of the receiver of the device of the present invention. FIG. 7 is a table showing an example of determining whether to solve or lock the door. 1... Transmitter, 2... Infrared light emitting element, A, B
...Push button switch, 6...Selection switch circuit, 7...Signal generation circuit, 10...Receiver, 1
DESCRIPTION OF SYMBOLS 1, 12... Infrared light receiving element, 17... Key code signal judgment circuit, 19... Operation code signal judgment circuit, 20... Output judgment circuit, 23... Output circuit.

Claims (1)

[Scope of Claims] 1. A selection switch circuit capable of setting an operation code having information specifying a door or other opening/closing object to be unlocked or locked in a vehicle, and generating a specified key code signal and the operation code signal. a transmitter comprising a signal generation circuit for converting each of these code signals into a corresponding infrared signal, a light emitting element for converting and outputting each code signal, and a power source for supplying power to each of the circuits; A light receiving element is installed on each door and receives the infrared signal and converts it into a corresponding electric signal, and determines whether the converted key code signal matches the set memory code, and when they match. and a receiver equipped with a discrimination circuit that outputs an unlocking or locking signal to one or more doors or opening/closing bodies designated by the combination of the operation code signal converted into the operation code signal and the received door. Unlocking device for use. 2. The vehicle solution according to claim 1, wherein the selection switch circuit includes two pushbutton switches, and each pushbutton switch is operated individually or simultaneously to transmit a different operation code signal. Application equipment. 3. The vehicle unlocking device according to claim 1, wherein the transmitter is provided with a display means for detecting the voltage of the power source and displaying the detected voltage when the voltage is equal to or higher than a certain voltage. Device.